class Calc:
    def __init__(self,num1,num2):
        self.num1 = num1
        self.num2 = num2

    def add(self):
        c = self.num1 + self.num2
        print(c)

    def sub(self):
        c = self.num1 - self.num2
        print(c)

    def mul(self):
        c = self.num1 * self.num2
        print(c)

    def div(self):
        c = self.num1/self.num2
        print(c)


calc = Calc(10,5)
calc.add()
calc.sub()
calc.mul()
calc.div()
